I am 77 year old woman, have had 4 Mohs surgeries, two on my face, eye and lip, my dermatologist of 7 years stopped regular practice to just do surgery, so I am seeing the dermatologist he referred me to, and a month ago she prescribed the above cream to put all over my face once a day for three weeks, she gave me no information re the side effects and after reading about it, I decided to just do about a fourth of one side of my face to check reaction, when I saw her she was not happy that I chose to do that and told me to do my whole face, the spot treatment was tolerable and resulted in some crusty formations, I would prefer to do a little at a time, she said no, and am not sure what to do, since she has my records and I did do part of my face, I am worried about doing the rest all at once? Does anyone have suggestions?